By car: take the D918 towards Saint-Jean-Pied-de Port. On leaving Osses, turn right towards Saint-Étienne-de-Baigorry, crossing the Nive. Turn right 4 km after the bridge towards "Urdoz Bastida". Continue along this road and after the Manehenea restaurant, turn left up the narrow road towards the "chambres d'hôtes" (bed and breakfast).
Park in the small square by the church and the house called "Jauregia".
(S/E) Go back a little, passing in front of the small church, then leave the road.
(1) Turn left onto a small road that slopes slightly downhill from Urdoz to Bastida. The road crosses two small streams and then climbs slightly.
(2) At the crossroads, continue straight ahead.
(3) At the road, go around the Otsabia farm on the left, pass a turn-off on the left and continue to the Bordazaharrea farm.
(4) After the farm, leave the road and turn left, following the sign for "Iparla".
(5) At the crossroads, continue straight ahead towards the Galarze Pass; the other path leads to the Larrarte Pass. Then cross a stream and begin a winding climb that will take you to the Galarze Pass.
(6) Just before this pass, take a path on the left that runs alongside a fence and leads to the Col d'Idoko with its borda. You can admire the "Cirque de Gapelu" and the summit of Iparla just above you.
(7) Head north on a path along the side of the mountain that will take you to the foot of the couloir leading up to the Col d'Iparla. First, pass along a scree slope and then continue through the grass. The slope is steep but safe in dry weather.
(8) Arrive at the Col d'Iparla in front of the Borne Frontière 90 and on theGR®10(altitude 950m). Follow theGR®10south towards the Pic d'Iparla (1,049 m), continue towards the Pic de Toutoulia (987 m) and then descend to the Col d'Harrieta (814 m). Next, climb up the ridge towards the Astate (1,016 m) and then towards the Col d'Astate (955 m).
(9) At the Col d'Astate, take a path on the left that follows the side of the cliffs, then head east to the Col de Sarastegui.
(10) At the pass, take a path north, which continues along the cliffs, cross three small streams, walk through fields of asphodel and descend a grassy ridge to a grassy path on the right.
(11) Take this path overlooking a stream and descend gently towards Urdoz.
(12) At the crossroads, take a path on the left that continues downhill. You will see Urdoz on your left.
(13) In front of a gate, turn left onto a small path with nettles and brambles. Cross the stream and climb back up towards Urdoz.
(14) Take the path on the left, which climbs slightly, and join the track that takes you back to the church car park (S/E).